1oxl: Difference between revisions

Revision as of 02:12, 28 July 2008

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File:1oxl.png

Template:STRUCTURE 1oxl

INHIBITION OF PHOSPHOLIPASE A2 (PLA2) BY (2-CARBAMOYLMETHYL-5-PROPYL-OCTAHYDRO-INDOL-7-YL)-ACETIC ACID (INDOLE): CRYSTAL STRUCTURE OF THE COMPLEX FORMED BETWEEN PLA2 FROM RUSSELL'S VIPER AND INDOLE AT 1.8 RESOLUTIONINHIBITION OF PHOSPHOLIPASE A2 (PLA2) BY (2-CARBAMOYLMETHYL-5-PROPYL-OCTAHYDRO-INDOL-7-YL)-ACETIC ACID (INDOLE): CRYSTAL STRUCTURE OF THE COMPLEX FORMED BETWEEN PLA2 FROM RUSSELL'S VIPER AND INDOLE AT 1.8 RESOLUTION

Template:ABSTRACT PUBMED 16122995

About this StructureAbout this Structure

1OXL is a Single protein structure of sequence from Daboia russellii russellii. Full crystallographic information is available from OCA.

ReferenceReference

Crystal structure of the complex of the secretory phospholipase A2 from Daboia russelli pulchella with an endogenic indole derivative, 2-carbamoylmethyl-5-propyl-octahydro-indol-7-yl-acetic acid at 1.8 A resolution., Balasubramanya R, Chandra V, Kaur P, Singh TP, Biochim Biophys Acta. 2005 Sep 25;1752(2):177-85. PMID:16122995

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-'''INHIBITION OF PHOSPHOLIPASE A2 (PLA2) BY (2-CARBAMOYLMETHYL-5-PROPYL-OCTAHYDRO-INDOL-7-YL)-ACETIC ACID (INDOLE): CRYSTAL STRUCTURE OF THE COMPLEX FORMED BETWEEN PLA2 FROM RUSSELL'S VIPER AND INDOLE AT 1.8 RESOLUTION'''
+===INHIBITION OF PHOSPHOLIPASE A2 (PLA2) BY (2-CARBAMOYLMETHYL-5-PROPYL-OCTAHYDRO-INDOL-7-YL)-ACETIC ACID (INDOLE): CRYSTAL STRUCTURE OF THE COMPLEX FORMED BETWEEN PLA2 FROM RUSSELL'S VIPER AND INDOLE AT 1.8 RESOLUTION===
-==Overview==
+<!--
-Phospholipase A2 (PLA2) enzymes from snake venoms are approximately 14 kDa secretory proteins and catalyze the release of arachidonic acid which is the precursor of proinflammatory mediators such as prostaglandins, leukotrienes, thromboxanes and platelet-activating factors. The structure of the PLA2 enzyme purified from the venom of Daboia russelli pulchella was determined using molecular replacement method and refined to an R value of 18.3% for all the reflections to 1.8 A resolution. The structure contains two crystallographically independent molecules A and B which form an asymmetric homodimer. The Ca2+ ion was not detected in the present structure, however, a characteristic non-protein high quality electron density was observed at the substrate-binding site of molecule A which allowed a clear interpretation of a natural ligand identified as a derivative of indole, 2-carbamoylmethyl-5-propyl-octahydro-indol-7-yl)-acetic acid. The corresponding substrate-binding site in molecule B was empty. The ligand present in molecule A is involved in extensive interactions with the protein atoms including important catalytic residues such as Asp-49 and His-48. The results also show that the indole derivatives act as potent inhibitors of secretory group II PLA2 enzymes that can be further modified to be used as potential therapeutic agents.
+The line below this paragraph, {{ABSTRACT_PUBMED_16122995}}, adds the Publication Abstract to the page
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+{{ABSTRACT_PUBMED_16122995}}
 ==About this Structure==
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 [[Category: Inhibition]]
 [[Category: Phospholipase a2]]
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